I just learned something new tonight while refilling my reactor. It’s always been a long trial and error process to get the thing refilled with water and fully running again, especially with a dosing pump. I tried putting a tee with valve on my effluent output and created a vacuum! Did it with my mouth, but next time it’s my Mitivac. It fully filled up both my canisters, then I just shut off valve! If any of you already know this method, why isn’t it documented by any brands or other hobbyists?